Stainless Steel Midsole 1: Standard: EN12568: 2010 , ASTM F2412, CSA 2: Flexing :1,500,000 3: Penetration:1400N. Stainless Steel Midsole We are the professional manufacturer of Stainless Steel Midsole in China.Standard: EN12568: 2010, ASTM F2412, CSAPenetration resistance for peetration insert: 1200N - 1400NFlexing resistance: No crack after 1X1,000,000 flexes, the best is No crack after 1,500, ...